Rigid and flexible ligands pillared manganese(II) complexes with 1,2,3-triazole-4,5-dicarboxylate constructed Kagomé layer

With the different carboxylate as pillars two novel manganese(II) complexes [Mn2 TzDC3 − (NIO) (H2O)2]·(H2O)3.5 (1) and [Mn2 TzDC3 −(IMA) (H2O)2]·(H2O)2 (2) (TzDC3 − = 1,2,3-triazole-4,5-dicarboxylate, NIO = nicotinate N-oxide and IMA = imidazol-1-yl-acetate) were obtained. The ligands TzDC3 − bridged metal ions to form Kagomé layers, which were further pillared by NIO and IMA resulting in similar pillar-layer structure but distinct topology net in 1 and 2. Magnetic study indicated that antiferromagnetic interactions are in 1 and 2 with spin competition.